<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script type="text/javascript">
			var array1 = new Array(7);
			console.log(array1.length);//7
			var array2 = new Array(100,'a',true);
			console.log(array2.length);//3
			// 创建一个空数组
			// 数组的长度是可以改变的
			var array = new Array();
			array[0] = '232';
			console.log(array);//["232"]
			console.log(array.length);// 1
			array[1] = 'true';
			console.log(array);//["232", "true"]
			console.log(array.length);// 2
			
			var arr = new Array();
			arr.push('zhangsan');
			console.log(arr);//["zhangsan"]	
			arr.push(false);
			console.log(arr);// //["zhangsan", false]	
			arr.push(45);
			console.log(arr);//["zhangsan", false, 45]
			console.log(arr[2])// 45
			console.log(arr.pop());
			console.log(arr.pop());
			console.log(arr.pop());
			console.log(arr);
		</script>
	</head>
	<body>
	</body>
</html>
